This Website is part of a multinational effort to bring you the latest information about emerald ash borer.

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Emerald Ash Borer

Emerald ash borer (EAB), Agrilus planipennis Fairmaire, is an exotic beetle that was discovered in southeastern Michigan near Detroit in the summer of 2002. The adult beetles nibble on ash foliage but cause little damage. The larvae (the immature stage) feed on the inner bark of ash trees, disrupting the tree's ability to transport water and nutrients. Emerald ash borer probably arrived in the United States on solid wood packing material carried in cargo ships or airplanes originating in its native Asia. As of August 2017, it is now found in 31 states, and the Canadian provinces of Windsor and Quebec. Since its discovery, EAB has:

  • Killed hundreds of millions of ash trees in North America.
  • Caused regulatory agencies and the USDA to enforce quarantines and fines to prevent potentially infested ash trees, logs or hardwood firewood from moving out of areas where EAB occurs.
  • Cost municipalities, property owners, nursery operators and forest products industries hundreds of millions of dollars.

Recommended Resources

Initial county EAB detections in North America & Canada

PDF Map of EAB Locations
As of September 6th, 2017
Click to enlarge

Changes/additions included since the August 1st, 2017 map are as follows:

The addition of initial state detections in:

  • Spartanburg County, SC

The addition of initial county detections in:

  • Norfolk County, MA
  • Martin County, MN
  • NC
    • Alamance County
    • Caswell County
    • Gaston County
    • Haywood County
    • Randolph County
  • SC
    • Greenville County
    • Oconee County
  • Randolph County, WV
  • WI
    • Chippewa County
    • Green Lake County
    • Marinette County
    • Waupaca County
    • Waushara County

Added to the list of counties quarantined by their state

  • Martin County, MN
  • WI
    • Chippewa County
    • Green Lake County
    • Marinette County
    • Waupaca County
    • Waushara County

Added to the list of Canadian initial county detections

  • QC
    • Drummond RCM
      • Municipalities:
        • Saint-Germain-de-Grantham
        • Saint-Cyrille-de-Wendover
        • Saint-Eugène
    • Matawinie RCM
      • Municipalities:
        • Chertsey


EAB University

EAB University

Head back to school to learn the latest about what is being done to address emerald ash borer and other invasive species in North America.


The 2017 Fall session has been posted!

Important Information

Insecticide Options for Protecting Ash Trees
June 2014 - Second Edition

Tree Care Specialists - Arborists - Homeowners

This bulletin answers your questions about, and offers insecticide options for controlling EAB.

Coalition for Urban Ash Tree Conservation EAB Management Statement

This endorses ash tree conservation in urban areas as part of an integrated EAB management program. It is supported by university scientists, commercial arborists, municipal foresters, public works officials, and non-governmental organizations (NGOs).

Additional Letters of Support

What To Know About EAB

adult eab
Adult Beetles are metallic green and about 1/2-inch long.
ash
It attacks only ash trees (Fraxinus spp.)
d-shaped exit hole
Adults leave a D-shaped exit hole in the bark when they emerge in spring.
woodpecker
Woodpeckers like EAB larvae; heavy woodpecker damage on ash trees may be a sign of infestation.
ash
Firewood cannot be moved in many areas because of the EAB quarantine.
packing crate
It probably came from Asia in wood packing material.

News & Information

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EAB University

Emerald Ash Borer University

The Fall 2017 EAB University line-up of webinars has been posted!

 

Check Out The 2017 Fall Webinars

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